Keyless lock.



E. JOHNSON.

KEYLESS LOCK.

TION FILED APPLIC 1910. 1,150,603. I Patented Aug. 17,1915.

wi sge/s:

I fastening trunks, valises, box-covers,

NILTED SAT EDWARD JOHNSON, OF PORT ALLEGHENY, PENNSYLVANIA.

KEYLESS LOCK.

secoa.

Specification of Letters Patent.

Patented Aug. 17, 1915.

Application filed Detober 7, 1910. Serial No. 585,799.

To all whom it may concern Be it known that I, EDWARD JOHNSON, a citizen of the United States, residing at Port Allegheny, in the county of McKean and State of Pennsylvania, haveinvented certain new and useful Improvements in Keyless Locks, of-which the following is a specification.

This invention relates to looks of the keyless type commonly designated combination locks and is designed chiefly as an improvement on that class of locks constructed for etc, a%though it could be used as a door look a so.

The lock is simple in construction, cheap to manufacture and is positive in action.

With the foregoing and other objects in View the inventionconsists in the combination and arrangement of parts to be fully described in the following specification, pointed out in the claims and illustrated in the accompanying drawing, in which Figure 1 is a front elevation of the lock complete and in use. Fig. 2 is an elevation of the device with most of the lower section of the casing removed to show the working parts. Fig. 3 is a side elevation of the lock. Fig. 4 is a section on line H of Fig. 1.

Like reference characters indicate corresponding parts throughout the several views.

2 is the body of the trunk, box or other article to which the lock may be applied and 3 is the cover or top thereof.

4 is a base plate the major portion of which is fastened to the body of the article to be locked and the smaller portion to the cover or top.

The lock proper comprises a. hollow casing made in two parts, the larger part 6 of which is fastened to the larger base plate portion and the smaller part 5 to the smaller portion of the base plate on the cover of the article to be locked. From the bottom 7 of the upper portion of the lock casing a catch 8 projects down through an aperture in the top 9 of the lower portion of the casing.

Levers 10 provided with lugs 11 adapted to register with the catch 8 are pivoted to the base plate at 12 and each terminates in a downwardly projecting prong 13 adapted to rest upon the periphery of a tumbler 14:

which tumbler is arranged on the axis 151 of oneof the-indicator-s16 which reside outside the casing 6.

l7-is a plate resting on the-base plate 4 and havingone portion bent away fromthat plate, over the lower termination of levers 10 as shown in F ig. l, and having a projection 18 extending outwardly to the'casing 6 to keep the same spaced away from the interior mechanism. A pair of oblique guide slots-19am disposed in one end of plate 17 through each of which a terminal projection 20 from each lever extends. The plate 17 is held against lateral movement by a pair of lugs 21 arranged on the base plate.

2222 are springs arranged on pivots 23 having one extremity resting upon the lug 18 of plate 17 and the other extremity on projections 20 of lovers 10, the tendency of said springs being to force the lug 18 of plate 17 into engagement with lug 24 of pivot 25 to reset the mechanism.

26 is a frame-like clasp fixed on the pivot 25 and adapted to oscillate the same and to embrace the two sections of the lock casing to prevent their separation unless brought about by proper means. The clasp is strengthened by cross bars 26.

Operation: To open the lock the indicators should be rotated until they both point to predetermined letters which will indicate that the depressions in tumblers 14 register with the lugs 13 of levers 10. The clasp 26 should now be rotated away from the base plate, thus turning its pivot 25 on which lug 2 1; is carried beneath the projection 18 of the plate 17. This operation will cause lug 2a to raise theplate 17 vertically while the guides 19, through their connection with projections 20, will rotate the levers 10, thus withdrawing them from the catch 8 and sinking the prongs 13 into the depressions in the tumblers 14. The lock sections may now be drawn apart. In looking the device again the two sections are brought together and the clasp 26 rotated against the base plate when the catch 8 will again be engaged by the lugs 11 of levers 10 since the lug 24. will then permit the plate 17 to assume its normal position due to the action of springs 22. I

Pins m extend from member 7 through member 9 to prevent lateral movement of the two lock sections and apertures w in the base plate receive lugs of the lower section of the casing to secure the same to the base plate as best shown in Fig. l.

What I claim is:

1, A look comprising a base plate, a sectional casing secured to said base plate, tumblers arranged in one section of said casing operative through the medium of indicators also carried by that section, levers pivoted to the base plate engaging said tumblers, a catch depending from the other casing section normally engaging the aforesaid levers, an obliquely slotted plate engaging the aforesaid levers and movably disposed upon the said base plate, a lug terminally carried by the lower end of the said slotted plate, a. pivot extending through the lower portion of the first mentioned casing section, a lug carried by said pivot for engagement normally with the lower terminal lug of said slotted plate and a clasp secured to said pivot and resilient members arranged upon pivots and having one extremity resting upon the lug of said plate and the other extremity resting upon projections of said levers.

2. A lock comprising a base plate, a sectional casing secured to said base plate, tumcatch depending from the other casing sec tion normally engaging the aforesaid levers, an obliquely slotted plate engaging the aforesaid levers and movably disposed upon the base plate, springs pivotally disposed upon the base plate, a lug terminally carried by the lower end of the said slotted plate, a pivot extending through the lower portion of the first named casing section, a lug carried by said pivot for engagement normally with the lower terminal lug of said slotted plate and a clasp secured to said pivot, said springs arranged upon pivots and having one extremity resting upon the lug of said plate and the other "extremity resting upon projections of said levers.

In testimony that I claim the foregoing as my own I have hereto aitixed my signa-,

ture in the presence of two subscribing witnesses;

EDWARD JOHNSON. Witnesses p VALBERT JOHNSON,

C. A. JOHNSON.

Copies 01 this patent may be obtained for in cents each, by' addressi ng the Commissioner of Patents. Washington, D. C." r 

